APA Style
Lewis, C.
(2009).
The screwtape letters (surat-surat screwtape)
.
Bandung:
Pionir Jaya.
MLA Style
Lewis, C.S..
"The screwtape letters (surat-surat screwtape)".
Bandung:
Pionir Jaya,
2009.
Buku SMP Athalia.